From K-QED.

You know when you first notice something and then you can never unnotice it?

It's like the bricks, light in circles all over San Francisco streets or the

arrow and the FedEx logo or those wall hooks that look like a drunk octopus

well Zach brazen notice a pattern and now he can't unsee it.

Why are there colorful dots above the drainage system and who puts them there?

I don't know if you've seen these dots. They're spray

painted layer upon layer. Red, blue, pink, orange, yellow, green. They kind of

look like abstract art and they are all over the place.

I think I noticed them honestly about a year ago because they reminded me of these colorful pieces of thread that you'll see in the

back alleys of Morocco. And then I started noticing in the streets of San Francisco and Oakland and Berkeley,

above the curbside drainage areas, there are these layered colored dots that obviously

it seems intentional

intentional intentional.

You're listening to Bay Curious I'm Olivia Allen Price and this week Jessica

Plachak brings us a story behind the colorful dots above the drains.

Zach's right. It's intentional, and it's part of a war against one of my sworn enemies.

Mosquitoes are naturally present in our environment here in California. I went and talked to Dr.

Cora Hoover at the San Francisco Department of Public Health.

The disease that we tend to worry about here in the Bay Area is West Nile virus.

While most people are fine, 1% of those infected get really sick,

and some have died.

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